Q: How does the W&D 200T-RM differ from the 200T-DI?
A: Our 200T-DI has two digital inputs suitable for monitoring on/off switches and similar devices. The 200T-RM has a special electronic magnetic compass as part of its internal circuitry.This feature sees the 200T-RM most often used to detect and transmit confirmation of biological tank filter arm rotations in water treatment plants.
The sealed 200T-RM unit has an internal lithium battery that has a 3-year life. Every time a complete 360° rotation is detected, the 200T-RM transmits a pulse on its 173MHz licence-exempt frequency. If the hub receiver fails to pick up regular pulses it alarms to indicate a probable stuck filter arm.
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